. >>> the national security agency tracking cell phone locations gathering 5 billion records a day. evidently americans' cell phones overseas aren't being repd. more from edward snowden. joining me justice correspondent pete williams. pete, this is collecting data. then if they want to they can do back and see where your cell phone was used. is that basically -- they are not tracking us overseas in realtime when we use our cell phones? >> the term "tracking" used to describe is something of a misnomer, it's not realtime. it's storing the record of where the cell phone was when the call was made. as you say, this was outside united states. the nsa does this the capability to gather data inside but it has not, chosen not to do it but it does track it outside the u.s. it's part of what is in the database of phone calls. go back and try to reconstruct where someone was or try to develop relationships, see who was in a certain place where maybe something bad happened, who was around a person the time the call was made, that data. they say it's valuable to gather information on suspected